I tried sending a picture as a document on whatsapp. Whenever i click "Browse other docs". I get this error which says " You many not have a proper app to view this content ". I have already reinstalled whatsapp and tried clearing cache and storage in file manager and gallery both several times. Rebooted too. The only thing i got it worked is installing 3rd party file manager. Do note that only few 3rd party file manager seems to work, not all.
